The above chart demonstrates the whole-atmosphere monthly mean concentration of methane (CH 4), calculated by using GOSAT data that reflect CH 4 levels in all layers of the atmosphere. It is also showing seasonal fluctuations and yearly rise over the analyzed period.

2020年12月14日 · We describe in detail how the data are generated, providing information and statistics for the entire processing chain from the L1B spectral data through to the final quality-filtered column-averaged dry-air mole fraction (XCH4) data.

Through analyzing the GOSAT observational data, scientists will be able to ascertain the global distribution of carbon dioxide (CO 2) and methane (CH 4), and how the sources and sinks of these gases vary with seasons, years, and locations. These new findings will enhance scientific understanding on the causes of global warming.

The higher level data products (FTS Level 2, CAI Level 2, FTS Level 3, CAI Level 3, Level 4A, and Level 4B data products) store retrieved physical quantities such as the atmospheric concentrations of CO 2 and CH4. Data users can search and order these data products by accessing GDAS (Figure 10).

2011年7月30日 · Comparing the first year of GOSAT retrievals over land with colocated ground-based observations of the Total Carbon Column Observing Network (TCCON), we find an average difference (bias) of −0.05% and −0.30% for and with a station-to-station variability (standard deviation of the bias) of 0.37% and 0.26% among the 6 considered TCCON sites.

2023年9月13日 · The GOSAT and TROPOMI observe high CH 4 concentrations in the east and south and low concentrations in the west and north, which is highly related to the CH 4 emissions. The IASI and AIRS show a more uniform CH 4 distribution over China, which reflects the variation of CH 4 at a high altitude.

2023年8月10日 · In our study, the scientific data records of “CO2 column-mean molar fraction” and “CH4 column-mean molar fraction” are exploited for the fusion with GOSAT and OCO-2 through the developed method.

2023年5月15日 · To obtain more accurate near-surface CH4 concentrations from satellite observations, this paper proposed a conversion method based on the Extreme Gradient Boosting (XGBoost) algorithm, taking column amount retrieved by the Greenhouse Gas Observation SATellite (GOSAT) satellite, meteorological factors and …

2024年10月31日 · GOSAT（Greenhouse Gases Observing Satellite）数据集包含了全球温室气体观测卫星的数据，主要用于监测大气中的二氧化碳（CO2）和甲烷（CH4）浓度。 该数据集提供了全球范围内的温室气体浓度分布，有助于气候变化研究和环境监测。

2021年6月30日 · This work presents the latest release (v9.0) of the University of Leicester GOSAT Proxy XCH4 dataset. Since the launch of the GOSAT satellite in 2009, these data have been produced by the UK National Centre for Earth Observation (NCEO) as part of the ESA Greenhouse Gas Climate Change Initiative (GHG-CCI) …